A method for injecting a reductant into an exhaust gas stream of a combustion turbine engine for selective catalytic reduction. The method may include the steps of: directing the exhaust gas stream through an exhaust duct; receiving the directed exhaust gas for treatment by a catalyst positioned within the exhaust duct; providing a reductant in a liquid state; pressurizing and heating the reductant in a manner that maintains the reductant in the liquid state; and injecting the heated, pressurized reductant into the exhaust gas stream such that the reductant flash vaporizes upon injection due to a pressure differential.

A carbon capture system includes a hydrogen production module. The hydrogen production module is used to control the amount of hydrogen entering an internal combustion engine to reduce an amount of water vapor generated by the internal combustion engine, thereby increasing the efficiency of the carbon capture device. If too much water vapor is detected in an exhaust of the engine, the amount of hydrogen produced by a hydrogen production module can be increased, thereby reducing the amount of hydrogen entering the engine and reducing the amount of water vapor generated by the engine. A reformer catalyst can be used by the hydrogen production module to remove at least a portion of hydrogen in a fuel stream of the engine.

Disclosed is a catalyst composition for inhibiting the deactivation of a catalyst for purifying exhaust gas from a compressed natural gas combustion system, which contains platinum and palladium as precious metal components. Specifically, a catalyst for purifying exhaust gas from a compressed natural gas vehicle or a static combustion system is configured such that a ceramic substrate is impregnated with palladium-impregnated first alumina, platinum-impregnated second alumina, and a ceria component, wherein the first alumina is further impregnated with a cocatalyst selected from the group consisting of barium, nickel, lanthanum, samarium, and yttrium, thus significantly inhibiting the deactivation of the CNG lean burn engine catalyst.

The disclosure relates to composite membranes for selective separation and processing of fluids and industrial applications.

A process and/or system for producing fuel using renewable hydrogen having a reduced carbon intensity. The renewable hydrogen is produced in a hydrogen production process comprising methane reforming, wherein at least a portion of the feedstock for the hydrogen production process comprises upgraded biogas sourced from a plurality of biogas plants. Each of the upgraded biogases is produced in a process that includes collecting biogas comprising methane and carbon dioxide, capturing at least 50% of the carbon dioxide originally present in the collected biogas and producing the upgraded biogas. Storage of the captured carbon dioxide reducing a carbon intensity of the fuel, without having to provide carbon capture and storage of carbon dioxide from hydrogen production.

Methane oxidation catalysts are disclosed to efficiently convert methane emissions with the lean air-methane ratio between 20:1 to 65:1 into less harmful byproducts such as carbon dioxide and water. This novel catalyst utilizes an engineered combination of precious metal group particles supported on the transition metal oxide particles on a high-surface-area substrate. Its catalytic mechanism involves 1) the activation of methane molecules on the catalyst surface, followed by their oxidation into CO.sub.2 and H.sub.2O through a series of intermediate steps, 2) by the additional methane adsorption sites from cheaper base-metal catalyst and abate it via reformation process, 3) by allowing gas phase oxygen adsorption competing between precious group metal catalyst and base-metal oxide catalyst surfaces to facilitate oxygen diffusion for oxidation process, and 4) by preventing water occupying active precious metal sites by promoting the adjacent preferential water adsorption sites formed by the oxides with lower enthalpy of formation of hydroxides.

There is provided a dielectric barrier electrical discharge apparatus, system and method. The apparatus comprises at least two electrodes arranged in use to provide at least one anode and at least one cathode an electric field thereby being establishable therebetween, the at least two electrodes being separated to allow a fluid to be present between the electrodes in use. At least one of the electrodes has a dielectric portion connected to at least part of said electrode, and a sub-macroscopic structure is connected to at least one of the electrodes or dielectric portion.

Disclosed are methods for regenerating an at least partially deactivated methane oxidation catalyst comprising contacting the catalyst with a gas stream comprising carbon monoxide (CO) under conditions that are net lean of stoichiometry and at a temperature of about 125 C. to about 450 C. over a period of time. Also provided are methane oxidation catalysts that have been regenerated according to the disclosed methods, as well as methods of catalyzing methane oxidation.

A system that can eliminate engine combustion emissions in addition to raw and fugitive methane emissions associated with a gas compressor package. The system may comprise an air system for starting and instrumentation air supply; electrically operated engine pre/post-lube pump, compressor pre-lube pump, and cooler louver actuators; compressor distance piece and pressure packing recovery system; blow-down recovery system; engine crankcase vent recovery system; a methane leak detection system; and an overall remote monitoring system.

A system includes a gas treatment system having an adsorption module, wherein the adsorption module includes one or more sorbent cartridges having a sorbent material. The gas treatment system further includes a linear positioning assembly configured to move the adsorption module along a linear path of travel between a first position in a first flow path and a second position in a second flow path. The gas treatment system is configured to adsorb an undesirable gas from a first fluid flow in the first flow path into the sorbent material when the adsorption module is disposed in the first position. The gas treatment system is configured to desorb the undesirable gas from the sorbent material when the adsorption module is disposed in the second position.